Help with PHP - Strip variable

[mateusmoraes]

Hi,

I'm new to PHP (I'm migrating from ASP) and also to Pligg. I'm in need of a little help with something I believe it's not hard:

How do I check if the $url variable has an specific value and then extract what doesn't match?

Example: I have "http://youtube.com/watch?v=1234567" defined for $url. I want to strip just "http://youtube.com/watch?v=" so that the result is "1234567".

I intend to use it in the link_summary.tpl file so I can get the thumbnails from Youtube videos in a dynamic way.

Thanks in advance!

[dollars5]

use preg_match - regular experssions are fast and efficient for pattern matching.

[mateusmoraes]

use preg_match - regular experssions are fast and efficient for pattern matching.

Thanks for replying.

I actually thought of the following:

if(preg_match("'/http:\/\/www.youtube.com\/watch\?v=([0-9a-zA-Z\-\_]*)(.*)/i'", $this->url, $matches)) {
			$this->youtube_id=trim($matches[1]);
		}

Problem is that I don't know if it's right not even where to add this piece of code. I tried in link_summary.tpl, inside {php}{/php} but it did not work.

[dollars5]

You can refer to the example at embed_video module in your Pligg/modules folder/embed_videos/plugins/function.embedvideos.php - there they extract just the video code and use it - I think that will help you.

[crakez]

I was also looking for a way to get thumbnails from Youtube videos in a dynamic way. Nice idea will try it.

[mateusmoraes]

You can refer to the example at embed_video module in your Pligg/modules folder/embed_videos/plugins/function.embedvideos.php - there they extract just the video code and use it - I think that will help you.

That helped a bit but I still don't know how to add this into link_summary.tpl

I was also looking for a way to get thumbnails from Youtube videos in a dynamic way. Nice idea will try it.

That is actually easy. Once you get the Youtube Video ID you just have to insert it

<img src="http://img.youtube.com/vi/{$youtube_video_id}/2.jpg">

[mateusmoraes]

OK, I should start with steps:

1) how to assign a name to a variable?
2) which file(s) should be used for that so I can retrieve this variable in link_summary.tpl?